The sarcomere will have uncontrolled muscle contractions.
Troponin blocks myosin-binding sites in the tropomyosin of the actin. If the troponin is damages, the myosin-binding sites will be exposed and myosin heads (of the myosin fiber) will be able to form cross-bridges with the actin even when not required.
Explanation:
This means the sarcomere will contract even when not required or expected hence resulting in symptoms like muscle spasms. Usually, troponin molecules exposes the myosin-binding sites on the tropomyosin upon binding of Ca²⁺ ions. These Ca²⁺ are usually released by the sarcoplasmic reticulum upon impulse from the inverted nerve.
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Answer:
C. all living things are made of one or more cells.
Explanation:
Sounds like it.
Answer:
Perform different functions for the organisms
Explanation:
1-Stem cells can differentiate into other specialized cells.
2-Specialized cells are more complex.
3-Specialized cells usually do not reproduce
Answer:
The answer is B and D.
Explanation:
PKA ( Protein Kinase A) is an enzyme which becomes active with the presence of cAMP molecules in the cell and the cAMP molecules need to bind to R subunits to become active which happens at a ratio of 1:2.
The example given in the question states that the Ro sububit can bind to 8 molecules of cAMP rather than the conventional 2.
This means that the activation of the Ro subunits is harder than the activation of R subunit because of the requirement of higher cAMP concentrations.
B is correct, full activity of PKA with Ro subunits needs a higher concentration of cAMP.
Because Ro binds to eight units of cAMP, the dynamic range of activity of PKA with Ro is going to be over a wider range of cAMP concentration.
I hope this answer helps.
Answer:
C. To taste food
Explanation:
the mouth is from where living organisms take food in.